Cold data
{{Short description|Computer data that is rarely accessed}}
In computer storage, cold data refers to data that is rarely accessed, therefore considered "cold".
Cold data is the opposite of hot data, which is data that is frequently accessed.{{cite book |last1=Cai |first1=Zhipeng |last2=Wang |first2=Chaokun |last3=Cheng |first3=Siyao |last4=Wang |first4=Hongzhi |last5=Gao |first5=Hong |title=Wireless Algorithms, Systems, and Applications: 9th International Conference, WASA 2014, Harbin, China, June 23-25, 2014, Proceedings |date=18 June 2014 |publisher=Springer |isbn=978-3-319-07782-6 |url=https://books.google.com/books?id=mdQlBAAAQBAJ&dq=%22cold+data%22+%22hot+data%22&pg=PA14 |language=en}}
Uses
To optimize storage costs, cold data can be stored on lower performing and less expensive storage media.{{cite book |last1=Abbasi |first1=Asif |title=AWS Certified Data Analytics Study Guide: Specialty (DAS-C01) Exam |date=20 November 2020 |publisher=John Wiley & Sons |isbn=978-1-119-64944-1 |url=https://books.google.com/books?id=yKcKEAAAQBAJ&dq=%22cold+data%22+%22hot+data%22&pg=PA12 |language=en}} For example, solid state disks may be used for storing hot data, while cold data can be moved to hard drives, optical discs, tapes, or migrated to cloud storage.[https://www.techopedia.com/definition/32623/cold-data Cold Data], Techopedia[https://www.enterprisestorageforum.com/management/cold-cloud-data-storage/ Cold Cloud Data Storage], Enterprise Storage Forum
See also
- {{annotated link|Cache (computing)}}
- {{annotated link|Hierarchical storage management}}
- {{annotated link|Sneakernet}}